Fire extinguisher



FIG. 1 is a front perspective view of a fire extinguisher showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a side elevational view thereof, the opposite side elevational view being a mirror image of that shown;

FIG. 4 is a top plan view thereof. 

The ornamental design for a fire extinguisher, as shown and described. 